Background: Patients admitted in intensive care units often receive mechanical ventilation. Prior to extubation, weaning process could be a major cause of dyspnea and anxiety in awake intubated patients. Hypnosis is commonly used to manage anxiety and pain. Our hypothesis is that hypnosis would decrease stress during the weaning and extubation process.
Methods: This systematic review follows PRISMA Guidelines and was registered in PROSPERO (CRD42020171445). Web of Science, MEDLINE and Cochrane Central Register of Controlled Trials databases were searched until 11 March 2020. We included all interventional trials assessing hypnotherapy for intubated patients whom were undergoing weaning or extubation. Two of the authors independently screened studies, extracted data and assessed risk of bias from identified trials.
Results: One study fulfilled our selection. This case series included 2 patients. Eleven sessions were completed. Dyspnea was not assessed/reported. Hypnotherapy decreased anxiety during the weaning process from a median of 1 point (Interquartile Range: 1.0-2.5). Increase in oxygen saturation is also reported. There was no evidence of neither an anxiety reduction or an oxygen saturation improvement. This is due to the scarcity of publication and the methodological design of the one selected study.
Conclusions: We cannot conclude whether or not hypnosis could be recommended in the weaning process of intubated patients. Further studies are needed to assess hypnosis effects.
Registration: The present systematic review was registered in the International prospective register of systematic reviews (PROSPERO) under registration number CRD42020171445.